I downloaded source files from
now in src/misc_utilities I can see classifychar.cpp but it requires:
include "opencv2/highgui/highgui.hpp"
include "opencv2/imgproc/imgproc.hpp"
so I downloaded OpenCV2 source but inside it I cant find highgui/highgui.hpp
instead its in \modules\highgui\include\opencv2 so I changed it its absolute path. Now I cant find utility.h and support/ut8f.h